Choosing the right controller needs to be decided based on the following criteria:
- Parameters to be measured: pH, mV, T°C, Conductivity
- Range
- Control desired: ON / OFF or proportional
- Set points: 1 or 2 for pH, 1 for other types of controllers
- Is an alarm needed
- Output signal: analog 4 to 20 mA to record or digital RS-232
PCA 300 and PCA 301 Chlorine Controllers
click on photo
to enlarge
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| |
PCA 300U |
PCA 301U |
| Range |
0-5 mg/L Free Chlorine |
0-5 mg/L Total residual Chlorine |
| Precision |
± 5% of the reading or ± 0.05 mg/L (whichever is greater) |
| Resolution |
0.01 mg/L |
| Minimum level of detection |
0.05 mg/L |
| Repeatability |
± 0.05 mg/L |
| Reagents |
Indicator HI 70450 (included)
Buffer HI 70451
(included)
DPD Compound HI 70452 (included)
Reagents will last for 50 days with a sampling rate of 10 min |
Indicator HI 70460 (included)
Buffer HI 70461
(included)
DPD Compound HI 70452 (included)
Reagents will last for 50 days with a sampling rate of 10 min |
| Response Time |
Depends on the sampling time.
A typical time is 5 minutes between 2 consecutive samples. |
| Sampling Rate |
Adjustable from 5 to 104 minutes |
| Sample Inlet Pressure |
From 1 psi (0.07 bar) to 20 psi (1.4 bar) with no external pressure regulator. Pressure regulator is available for pressure exceeding 20 psi (1.4 bar). |
| Sample Flow Range |
Recommended flow rate: 300 mL/min.
Minimum allowed: 100 mL/min, Maximum allowed: 500 mL/min |
| Sample Temperature Range |
5 to 40°C |
| Interferences |
Oxidizing Agents: Iodine, Bromine, Ozone, Chlorine Dioxide, Permanganate, Hexavalent Chromium.
Hardness must not exceed 100 mg/L as CaCO3. Alkalinity must not exceed 400 mg/L for Free or 700 mg/L for Total Chlorine. |
| Operating Temperature |
0 to 40°C |
| Recorder Output |
Selectable: 0-10 mV, 0-100 mV, 0-1 V or 4-20 mA.
Output span can be set anywhere in the 0-5 mg/L range. |
| Proportional Relay/Alarms |
1 Set Point: Low or High, one system error alarm.
Each equipped with a SPDT relay with contacts
(resistive load 5A at 250VAC or 5A at 30VDC),
(inductive load 2A at 250VAC or 3A at 30VDC) |
| Power Supply |
20 VA at 115VAC/230VAC; 50/60 Hz.
Frequency must be specified at order. |
| Inlet Connection |
3 mm ID tubing |
| Drain Connection |
10 mm tubing |
| Case |
NEMA-4X molded fiberglass polyester
with transparent GE Lexan window |
| Dimensions / Weight |
318 x 267 x 159 mm /
5 Kg without reagents | |